> #define SYS_MMAP(addr, len, prot, flags, fd, off) \ > __syscall(SYS_mmap, (void *)(addr), (size_t)(len), \ > (int)(prot), (int)(flags), (int)(fd), (__off_t)(off)) > #elif defined(__FreeBSD_kernel__) > #define SYS_MMAP(addr, len, prot, flags, fd, off) \ > syscall(SYS_mmap, (void *)(addr), (size_t)(len), \ > (int)(prot), (int)(flags), (int)(fd), (__off_t)(off)) > > sys/sys/syscallargs.h tells me that in OpenBSD there is a further > argument "long pad" at sixth position. Just setting it to "(long) 0" > gives a segmentation fault.
Actually, it's an int. But it only matters if you are wrapping the system call. If you are wrapping the mmap() symbol, it's already doing the right thing and does not need any extra parameter. See src/lib/libc/sys/mmap.c for yourself.
